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frez [133]
3 years ago
14

Please help! Can someone please help me with numbers 5 & 7?

Mathematics
1 answer:
MariettaO [177]3 years ago
8 0

Answer:

Infinity minus 9 is infinity-9

Step-by-step explanation:

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Yin wants to create figure Y′ that is similar to figure Y. Yin begins by reflecting figure Y across the y-axis.
Sholpan [36]

Answer: B) Dilate by scale factor of 2

====================================================

Explanation:

Your teacher isn't saying this directly, but I'm assuming s/he wants you to find a similar figure that isn't congruent to the original. Informally, your teacher seems to want you to find a figure that is the same shape but not the same size as the original.

If so, then any dilation will shrink or enlarge the image depending on the scale factor. So the new image will not be the same as the old one. In this case, a dilation with scale factor 2 means the new figure is twice as large (each side is twice as long). But the old image is similar to the new image. The angles keep their values and therefore we get the same shape. This is why choice B is the answer. Again this is assuming what I mentioned in the first paragraph.

Choices A, C, and D are all known as rigid transformations and they preserve the same size of the figure. Applying any of those operations will lead to the same figure (just rotated, reflected or shifted somehow). In other words, applying operations A,C, or D will have us get two congruent triangles. If two triangles are congruent, then they are automatically similar, but not vice versa. This is why we can rule out A,C, and D.

3 0
3 years ago
Read 2 more answers
I need solve this problem can you help me please ?
VARVARA [1.3K]
ED = 68
Angle GKH = 31
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Angle AKB = 112
5 0
3 years ago
1/2-3/16 hurry pls cause I really need it don’t judge me
damaskus [11]
The answer is 2/16 if you do the math with the numerators only.
7 0
3 years ago
Which statements can be used to justify the fact that two right angles are supplementary? Select two options.
agasfer [191]

Answer:

A right angle measures 90°.

A supplementary angle is twice the measure of a complementary angle.

Step-by-step explanation:

8 0
3 years ago
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Sarah drove 40 miles per hour. In 3 hours, Sarah drove 120 miles. Which is a valid proportion to represent the problem?
olga55 [171]
D=rt       120=40mph*3hours
6 0
3 years ago
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